Insulated wall structure.



' v. E. LANE.

INSULATED WALL STRUCTURE.

APPLICATION FILED APR. 6. 1912.

Patented May 25, 1915.

A M M m m Ma M M M M M M 7 (gINVENTOR ATTORNEY UNITED STATES PATENT OFFICE.

VICTOR- E. LANE, OF NEW YORK, N. Y., ASSIGNOR TO AMERICAN CAR AND FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

INSULATED WALL STRUCTURE.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed April 1912. Serial No. 689,012.

it is to be understood that the invention is not limited to the exact details of construc tion shown and described, as it is obvious that various modifications thereof will occur to persons skilled in the art- In said drawings: Figure 1 represents a fragment of the insulation showing the method of fastening. Fig. 2 represents a section of the same on the line 22. Fig. 3 shows a front and end view of a fastener with center or spear points. Figs. 4: and 5 are modifications of the same. Figs. 6, 7 and 8 represents blanks from which Figs. 3, 4 and 5 are stamped but showing an off center form of point which may be adopted to savenmaterial. Fig. 9 represents a perspective of a rib fastener utilizing the of]? center point and is adapted to be employed as shown in dotted lines at the right of Fig. 1.

The main object of this invention is to produce an effective insulation for'metal vehicle bodies and contemplates the utilization of a dead air space between the steel body and the insulation and the employment of a special form of fastenerso .formed as to space the insulation from the metal body and at the same time rigidly secure the insulation to the metal of the body. It also contemplates the utilization of a strengthening rib fastener where it 'is desired to employ very thin insulation, which is possible owing to the dead air space between the metal body and the insulation.

In the adaptation of this invention as shownin the drawings, scrap steel is V stamped into the shapes of Figs. 6,7 and 8 and then pressed into the shapes of Figs. 3, 4 and 5, or a steel strip is shaped into the form of Fig. 9. As the method of attaching the insulation is the same in all modifications it is only necessary that the fastener possess the same general details,

. pointed portion 12.

- In each of the forms shown the portion 10 serves as a broad bearing surface, which is of sufficient area to permit the application thereto of suitable welding means, as a welding tool, adapted to weld the same to a metal wall of a car or other vehicle, and said fiat portion 10 is secured to the metal body or wall 13 by the usual point welding process at suitable intervals. wall 13 by the clips or fasteners is a sheet of insulation 14, which insulation is impaled upon the pointed portions 12 of the clips until such pointed portions 12 protrude therethrough and the insulation rests upon the shoulders 11, which" are formed as offset portions of the clips, comprising the parts 10, 11 and 12, before indicated. Said offset portions or shoulders are formed at what may be considered, in view of the character of said clip, a considerable distance from the bearing portion 10 and intermediate the bearing portion 10- and the pointed portion 12 of the clips. The protruding pointed portions are turned down over the insulation and form outer supporting shoulders for the insulation, and with the inner shoulders 11 hold said insulation firmly spaced from the metal body. As the pointed portions 12 are of considerably less area than the shoulder portions, a washer 16, suitably punctured, may be slipped over the pointed Secured to the a portions and said pointed portions bent],

spaced pointed portions 12 projecting therefrom, and intermediate said spaced pointed portions are the offset flanges or shoulders 11, which are adapted to serve as stops,

against which the sheet of insulation is held at one side, while the-pointed portions 12 hold the insulationat the opposlte side. 0 It will be noted that the chps for supporting the insulation are secured to the continuous imperforate wall surface 13 and impale the insulation 14, being projected through the body portion thereof, remote from its edges.

Owing to thetnature of the insulation, which is generally composed of frail cellular material, it is impracticable to secure it in position by merely clipping or binding its edges and depending upon such edge grip to support and hold it in position, hence it is evident that the pointed portions 12 should be projected through the body portion of such insulation at some distance from its edges, as shown in Figs. 1 and 2.

Tosecure pro er insulation, it is evident that the area 0 the sheet of insulation, or sheets where more than one are used, should be co-eXtensive with the inner face of the admission or passage of air to the dead air space.

That I claim is 1. 'In an insulated wall structure for cars and the like, the combination with a metallic side plate and a spaced insulated sheet, of means for maintaining the plate and sheet in spaced relation and for securing the same together at different points consisting of a plurality of members, each having flat base parts fixedly secured to the said metal plate, outstanding sheet supporting parts spaced from the base parts, and prongs passing through the perforations in the insulated sheet having their outer ends bent to overlie the sheet, substantially as described.

2. In an insulated wall structure for cars and the like, the combination with a metallic side plate, of a plurality of spaced insulating supporting and securingmembers welded to the side plate, each member having an attaching base part, intermediate outstand-' ing supporting portions separated from the base part, and prongs projecting outwardly,

and an insulated sheet through the material of which the prongs of said supporting and securing devices pass, said sheet resting against said outstanding parts and being secured in place by the prongs, substantially as described.

In witness whereof I have hereunto set my hand in the presence of two witnesses;

' VICTOR E. LANE.

I Witnesses: 

